To be honest the self-study of the sciences is not an easy undertaking.
What I recommend is this website
http://www.openculture.com/free_textbooks
Just download a free text and start reading and taking notes.
Not sure why you'd want to learn chem though. Physics is basically chemistry but badass and with more math. I recommend that over chemistry because the applications are better. You can learn somewhat higher level newtonian physics with no understanding of calculus.
In all seriousness what would help you out the most would be learning economics. Can't stress that enough, my introductory econ class in college really opened my eyes to how shit works. Economics applies to a lot of life (especially game) and having an understanding of econ will benefit you much more than an amateur's approach of math, physics, or chemistry.
Studying maths by yourself is also a huge pain in the ass. I recommend just grabbing one thing (calculus or set theory or analysis or game theory .. etc) and figuring out how to master it without huge emphasis on the other fields thereof. It seriously does take years to absorb everything that you need to know about a certain field because math is so heavily interrelated.
If I had to pick one for you it would be calculus, and if I had to pick you a calculus book it would be this strange one --
http://www.amazon.com/Manga-Guide-Calcul...s=calculus
It's a manga guide to calculus. Pretty cool.
Calculus is one of those powerful tools that will teach you how to think about how things change. I think that the idea of calculus is genius because it's probably the first way I figured out how to understand metadata.
I think that your desire to find a chemistry book that is a page-turner is difficult to satisfy. If it's been written it's probably like "eat shoots leaves" for grammar and not exactly comprehensive. It definitely had to sacrifice solid knowledge to make it entertaining.
Probably my most useful tip I'm going to throw in here is that you didn't learn calculus/econ/chem/physics or whatever until you have taken a test to prove your mettle. You must intermittently test yourself to be sure that you're learning the material. Otherwise there's no sense in learning it.
I have trouble enough in class to not understand why somebody would warrant curiosity in the subject. Speaking as a math and physics major. To each his own I suppose.